You know what i hate about that Sakura is useless argument tho? If we're being honest, at a certain point during probably the Pain arc, like 95% of the cast became mad worthless. Sakura is highlighted because look who her teammates are, but I mean what did Kiba, Shino, and the rest of them nikkas really do throughout Shippuden that really mattered besides maybe catch an Akatsuki body? Sakura gets a bad wrap for being useless when basically most of the Leaf Village was super trash when it really mattered. Konohamaru took down a Pain body while nikkas was sitting on the sidelines watching Pain murder Naruto and Hinata.
After that arc the only nikkas who mattered were Tailed Beasts owners, Sharingan owners, and Kage level shinobi, which comes up to about 20 shinobi all together during the war.